/Engine/Source/Runtime/SignalProcessing/Public/DSP/AudioChannelFormatConverter.h
The input buffer array must have the same number of channels as theFInputFormatreturn fromGetInputFormat(). Each buffer within that array must have the same number of samples.
void ProcessAudio ( const [TArray](API\Runtime\Core\Containers\TArray)< [FAlignedFloatBuffer](API\Runtime\SignalProcessing\DSP\FAlignedFloatBuffer) > & InInputBuffers, [TArray](API\Runtime\Core\Containers\TArray)< [FAlignedFloatBuffer](API\Runtime\SignalProcessing\DSP\FAlignedFloatBuffer) > & OutOutputBuffers )